What socio-psychological principles are evident in each?
References
Argyle, M. (1992). Social relationships. In M. Argyle (1992). The social psychology of everyday life (Ch3, pp. 38 - 71). Routledge: London.
Baumeister, R. F., & Bushman, B. J. (2008). Social psychology and human nature (1st ed.) Belmont, CA: Thomson Wadsworth.
Gladwell, M. (2005). The theory of thin slices: How a little bit of knowledge goes a long way (Gottman's relationship studies) (pp. 18-34). In M. Gladwell (2005). Blink: The power of thinking without thinking. London: Allen Lane. An excerpt of this exists here: http://contemporarylit.about.com/od/firstchapters/a/blinkExcerpt.htm